General science Questions And answers 2021

General science Questions And answers 2021

Classification of Living Things

Q. 1. Kingdom Animalia deals with?

Ans. Animals

Q. 2. Kingdom Plantae deals with?

Ans. Plants

Q 3. Kingdom Monera deals with?

Ans. Bacteria

Q. 4. Kingdom Protista deals with?

Ans. Eukaryotic organism (single cells)

Q. 5. Kingdom Fungi deals with?

Ans. Prokaryotic organisms (mushroom)

Q. 6. Who proposed the five-kingdom classification in 1969?

Ans. Robert H. Whittaker

Q. 7. What is eukaryotic cell?

Ans. Single cell

Q. 8. What is prokaryotic cell?

Ans. Multicellular

Q. 9. Study of Algae is called?

Ans. Phycology

Q. 10. Study of Fungi is called?

Ans. Mycology

Q. 11. Plants, animals and fungi are?

Ans. Multicellular organisms

Q. 12. Bacteria and fungi are?

Ans. Unicellular organisms

Q. 13. Plants make their own food by?

Ans. Photosynthesis

Q. 14. A process that do not take place in fungi is?

Ans. Photosynthesis

Q. 15. Algae make their own food by?

Ans. Photosynthesis

Q. 16. Cutleria, Ulva and Volvox are diseases caused by?

Ans. Algae

Q. 17. The word Animal comes from a Latin word meaning?

Ans. Soul or Breathe

Q. 18. Animals are further divided into two groups called?

Ans. Vertebrates and invertebrates

Q. 19. Animals with backbone are called?

Ans. Vertebrates

Q. 20. Fish, amphibians, reptiles, birds and mammals are example of?

Ans. Vertebrate animals.

Q. 21. Animals without backbone are called?

Ans. Invertebrates

Q. 22. Worms, spiders and insects are example of?

Ans. Invertebrate animals

Q. 23. Vertebrates animals that take on the temperature of their surrounding are called?

Ans. Cold-blooded

Q. 24. Vertebrates animals that maintain a constant body temperature are called?

Ans. War-blooded

Q. 25. Birds and animals are?

Ans. Warm-blooded

Q. 26. Fishes, amphibians and reptiles are?

Ans. Cold-blooded

Q. 27. How many kinds of fishes are there?

Ans. 30,000

Q. 28. The body of fish is covered with?

Ans. Scales

Q. 29. A fish swims in the water by its?

Ans. Fins

Q. 30. Fishes take breath through their part called? 

Ans. Gills

Q. 31. Animals that live in land as well as water are?

Ans. Amphibians

Q. 32. Amphibians lay their eggs in?

Ans. Water

Q. 33. Frogs, toads, newts and salamanders are example of?

Ans. Amphibians

Q. 34 Animals that spend most of their life on land but do often live in water are?

Ans. Reptiles

Q. 35. Reptiles lay their eggs on?

Ans. Land

Q. 36. Lizards, snakes, crocodiles, turtles, and tortoise are example of?

Ans. Reptiles

Q. 37. How many kinds of birds are there?

Ans. 9,000

Q. 38. Which is biggest bird in the word?

Ans. Ostrich

Q. 39. Animals that give birth to their babies and feed them with milk are?

Ans. Mammals

Q. 40. Which is the only mammal that can fly in air?

Ans. Bat

Q. 41. How many kinds of insects are there?

Ans. 80,000

Q. 42. Which insects are environment friendly?

Ans. Earthworms

Q. 43. Heaviest insect found in Africa is?

Ans. Goliath Beetle

Q. 44. How many pairs of jointed legs do insects have?

Ans. Three

Q. 45. How many species of plants have been discovered?

Ans. 380,000

Q. 46. A process in which plants make their own food is called?

Ans. Photosynthesis

Q. 47. Plants are divided into two main groups called?

Ans. Flowering plants and Non-flowering plants

Q. 48. Plants that do not produce flowers are called?

Ans. Non-flowering plants

Q. 49. Ferns and mosses are example of?

Ans. Non-flowering plants

Q. 50. instead of seeds what non-flowering produce?

Ans. Spores

Q. 51. Flowering plants are further divided into two main types called?

Ans. Monocot plants and dicot plants

Q. 52. Seeds of monocot plants contain of how many cotyledons (seed leaf)?

Ans. One cotyledon

Q. 53. Seeds of dicot plants contain of how many cotyledons (seed leaf)?

Ans. Two cotyledon

Q. 54. Which plants have parallel leaf venation?

Ans. Monocot plants

Q. 55. Which plants have netted venation of leaves?

Ans. Dicot plants

Q. 56. Flowers of which plants have three or multiple of three floral leaves?

Ans. Monocot plants

Q. 57. Flowers of which plants have four or multiple of four floral leaves?

Ans. Dicot plants

Q. 58. Spider is an insect?

Ans. False 

Q. 59. Mushrooms belong to plant kingdom ?

Ans. False

Q. 60. Leech is an example of invertebrate ?

Ans. True

Q. 61. All insects have two pairs of wings?

Ans. (False)

Microorganisms

62. Microorganisms are grouped as?

Ans. Virus, bacteria and fungi

Q. 63. How many cells do bacteria have?

Ans. One

Q. 64. Escherichia is an example of?

Ans. Bacteria

Q. 65. Common cold is caused by?

Ans. Flu virus

Q. 66. Influenza is an example of?

Ans. Virus

Q. 67. Which are largest microbes among bacteria, virus and fungi? 

Ans. Fungi

Q. 68. Yeast is an example of?

Ans. Fungi

Q. 69. Which are the non-cellular organisms?

Ana. Virus

Q. 70. Penicilium is fungus that produces antibiotic called?

Ans. Penicillin

Q. 71. Any disease caused by presence of microbial organisms in the body is called an?

Ans. Infection.

Seeds, their Structure and Germination

Q. 72. What types of seeds are there?

Ans. Monocot and Dicot.

Q 73. Seed coat is known as?

Ans. Testa

Q. 74. The opening of the seed is called?

Ans. Micropyle

Q. 75. Mini plant inside the seed is called?

Ans. Embryo

Q. 76. Which part of seed develops into new plant?

Ans. Embryo

Q. 77. What emerges first in new plant?

Ans. Roots

Q. 78. Structure that emerges from the soil of new plant is called?

Ans. Hypocotyl

Q. 79. Seed germination in which the cotyledons emerge above the ground is called?

Ans. Epigeal germination.

Q. 80. In which type of seed the process Epigeal germination takes place?

Ans. Dicot seed

Q. 81. Seed germination in which the cotyledons remain inside the soil is called?

Ans. Hypogeal germination

Q. 82. In which type of seed the process Hypogeal germination takes place?

Ans. Monocot seed

Q. 83. A part of seed that contains stored food is called?

Ans. Endosperm

Q. 84. Most seeds germinate between the temperature?

Ans. 16 to 24 Centigrade

Q. 85. Which three conditions are necessary for seed germination?

Ans. Water, oxygen and proper temperature.

Environmental Pollution

Q. 86. Which is main causes of ozone depletion?

Ans. Air pollution

Q. 87. Air pollution is caused by?

Ans. Solid, liquid and gases pollutants

Q. 88. Water borne diseases are caused by?

Ans. Water pollution

Q. 89. Cholera, diarrhea and typhoid diseases are caused by?

Ans. Microbial pollutants.

Q. 90. Asthma is due to the exposure to a type of environment pollution called?

Ans. Air Pollution

Matter and Changes in its State

Q. 91. What is melting point of ice?

Ans. O Centigrade

Q. 92. A process in which liquid changes into gas without boiling is called?

Ans. Evaporation

Q. 93. A process in which water vapor changes into liquid on cooling is called?

Ans. Condensation

Q. 94. In water cycle, water is available in how many states of matter?

Ans. Three (all)

Q. 95. Drops of water that form on cool surfaces at night due to condensation is called?

Ans. Dew

Q. 96. A thick cloud of water droplets on the earth's surface is called?

Ans. Fog

Q. 97. Tiny droplets of water is called?

Ans. Moisture

Force and Machine

Q. 98. A force that stops things from moving easily is called?

Ans. Friction

Q. 99. Fraction is a force which always opposes?

Ans. Motion

Q. 100. Friction forces are larger on?

Ans. Rough surfaces

Q. 101. Fraction forces are smaller on?

Ans. Smooth surfaces

Q. 102. Fraction forces between the air and moving object cause?

Ans. Resistance

Q. 103. Force that opposes any object moving through the air is called?

Ans. Air resistance

Q. 104. A force of attraction between two objects is called?

Ans. Gravity

Q. 105. Quantity of matter in an object is? Ans. Mass

Q. 106. Mass is measured in?

Ans. Kilogram

Q. 107. Weight is the pull of?

Ans. Gravity

Q. 108. Weight is measured in?

Ans. Newtons

Q. 109. A lever is a long bar which moves around a fixed point called?

Ans. Fulcrum

Q. 110. Lever is a kind of?

Ans. Simple machine.

Q. 111. How many kinds of lever are there?

Ans. Three (first, second and third kind of lever)

Q. 112. In first kind of lever, fulcrum is between?

Ans. Effort and load

Q. 113. In second kind of lever, load is between?

Ans. Effort and fulcrum

Q. 114. In third kind of lever, effort is between?

Ans. Load and fulcrum.

Q. 115. A type of simple machine with two slanting sides ending in a sharp edge is called?

Ans. Wedge

Properties and Behavior of Light

Q. 116. Light is a form of?

Ans. Energy

Q. 117. Light travels in a? 

Ans. Straight line

Q. 118. A object which produces and emits its own light is called?

Ans. Luminous

Q. 119. A object that does not produce light but it reflects light that comes from luminous object is called?

Ans. Non-luminous

Q. 120. How many seconds does sun take to convert over 657 million tons of hydrogen into 653 million tons of helium?

Ans. One second

Q. 121. The missing 4 billion tons of mass are discharged into?

Ans. Space

Q. 122. How much heat and light does earth receive from four billion tons of mass?

Ans. Two billionths

Q. 123. When lights rays bounce back, it is called?

Ans. Reflection

Q. 124. Objects that allow light to travel through them are called?

Ans. Transparent objects.

Q. 125. Objects that allow some light to travel through them are called?

Ans. Translucent objects

Q. 126. Objects that do not allow light to travel through them are called?

Ans. Opaque objects

Q. 127. Speed of light in a vacuum is?

Ans. 300 million meters per second

Q. 128. When light is blocked by opaque objects, what is formed on opposite side of object?

Ans. Shadow

Q. 129. Solar eclipse occurs when moon is between?

Ans. Earth and sun

Q. 130. Lunar eclipse occurs when earth is between?

Ans. Moon and sun

Q. 131. How many phases of moon are there?

Ans. Eight

Q. 132. The phase of New Moon is called?

Ans. Waxing Crescent Moon

Q. 133. Last phase of moon when it disappears is called?

Ans. Waning Crescent Moon

Electricity and magnetism

Q. 134. Flow of negative electric charges through an electronic path is called?

Ans. Electric current

Q. 135. What things are used to draw a circuit diagram?

Ans. Symbols

Q. 136. A safety device used in circuit to protect the appliances and its wiring from damage is called?

Ans. Fuse

Q. 137. What is the inside the fuse?

Ans. Wire

Q. 138. Wire of fuses stops the flow of?

Ans. Current

Q. 139. A fuse can also be called as a?

Ans. Circuit breaker

Q. 140. Electrons of atom revolve outside the?

Ans. Nucleus

Q. 141. Protons and neutrons are present inside the?

Ans. Nucleus

Q. 142. Protons and neutrons are made up of?

Ans. Quarks

Q. 143. Electron was discovered by?

Ans. J. J Thomas in 1897

Q. 144. Proton was discovered by?

Ans. Ernest Rutherford in 1920

Q. 145. Neutron was discovered by?

Ans. James Chadwick in 1932

Q. 146. What happens when oppositely charged clouds interact with each other?

Ans. Lightening

Q. 147. Who were the discovers of magnetite?

Ans. Chinese

Q. 148. Who is father of magnet?

Ans. William Gilbert

Q. 149. Electromagnetic has a?

Ans. Temporary magnetic field

Q. 150. Bar magnet has a?

Ans. Permanent magnetic field